The Web Science initiative is oriented towards the in-depth understanding of the impact that Information and Internet technologies might have on science and on our daily lives. Furthermore, it aspires to the progression of scientific knowledge and research for the furthering of the development of the World Wide Web. In this respect, the Web Science Conference 2009: Society On-Line focuses, without being limited to, on the following areas of interest:

• Marketing and Consumer On-Line Behavior
• Digital Citizens Bill of Rights
• Online Dispute Resolution
• Education and the Web
• Psychology and the Web
• Social Meaning on the Web
• Distributed Social Data
• Security and Trust in Cyberspace
• Cognitive Technology and the Web
• Implications of the Mobile Web
• Case Studies for Web Science
• Social Networking and Identity
• Net Neutrality and Control
• Web Politics and e-Government